[INFO] fetching crate staticvec 0.10.8...
[INFO] testing staticvec-0.10.8 against 1.54.0 for beta-1.55-1
[INFO] extracting crate staticvec 0.10.8 into /workspace/builds/worker-86/source
[INFO] validating manifest of crates.io crate staticvec 0.10.8 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate staticvec 0.10.8
[INFO] removed 3 missing examples
[INFO] removed 3 missing tests
[INFO] finished tweaking crates.io crate staticvec 0.10.8
[INFO] tweaked toml for crates.io crate staticvec 0.10.8 written to /workspace/builds/worker-86/source/Cargo.toml
[INFO] crate crates.io crate staticvec 0.10.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1db09990b88d2679cd5cb04b70b882579a3e3a0ef1ad79f3d551bce3d3a38e63
[INFO] running `Command { std: "docker" "start" "-a" "1db09990b88d2679cd5cb04b70b882579a3e3a0ef1ad79f3d551bce3d3a38e63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1db09990b88d2679cd5cb04b70b882579a3e3a0ef1ad79f3d551bce3d3a38e63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1db09990b88d2679cd5cb04b70b882579a3e3a0ef1ad79f3d551bce3d3a38e63", kill_on_drop: false }`
[INFO] [stdout] 1db09990b88d2679cd5cb04b70b882579a3e3a0ef1ad79f3d551bce3d3a38e63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 235f178418377109ec2edb9ed204bb4c1e7f25964a59a4c71b61404df6cc2ec1
[INFO] running `Command { std: "docker" "start" "-a" "235f178418377109ec2edb9ed204bb4c1e7f25964a59a4c71b61404df6cc2ec1", kill_on_drop: false }`
[INFO] [stderr]    Compiling staticvec v0.10.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | / #![feature(
[INFO] [stdout] 32 | |   const_assume,
[INFO] [stdout] 33 | |   const_evaluatable_checked,
[INFO] [stdout] 34 | |   const_fn_floating_point_arithmetic,
[INFO] [stdout] ...  |
[INFO] [stdout] 70 | |   untagged_unions
[INFO] [stdout] 71 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:72:30
[INFO] [stdout]    |
[INFO] [stdout] 72 | #![cfg_attr(feature = "std", feature(read_initializer))]
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `staticvec`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "235f178418377109ec2edb9ed204bb4c1e7f25964a59a4c71b61404df6cc2ec1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "235f178418377109ec2edb9ed204bb4c1e7f25964a59a4c71b61404df6cc2ec1", kill_on_drop: false }`
[INFO] [stdout] 235f178418377109ec2edb9ed204bb4c1e7f25964a59a4c71b61404df6cc2ec1
